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Message-Id: <20210927230455.1066297-1-robdclark@gmail.com>
Date: Mon, 27 Sep 2021 16:04:53 -0700
From: Rob Clark <robdclark@...il.com>
To: dri-devel@...ts.freedesktop.org
Cc: freedreno@...ts.freedesktop.org, linux-arm-msm@...r.kernel.org,
Jordan Crouse <jordan@...micpenguin.net>,
Rob Clark <robdclark@...omium.org>,
Rob Clark <robdclark@...il.com>, Sean Paul <sean@...rly.run>,
David Airlie <airlied@...ux.ie>,
Daniel Vetter <daniel@...ll.ch>,
linux-kernel@...r.kernel.org (open list)
Subject: [PATCH 1/2] drm/msm: Add hrtimer + kthread_work helper
From: Rob Clark <robdclark@...omium.org>
Before open-coding this a 2nd time, add a helper.
Signed-off-by: Rob Clark <robdclark@...omium.org>
---
drivers/gpu/drm/msm/msm_atomic.c | 21 ++++++---------------
drivers/gpu/drm/msm/msm_drv.c | 29 +++++++++++++++++++++++++++++
drivers/gpu/drm/msm/msm_drv.h | 22 ++++++++++++++++++++++
drivers/gpu/drm/msm/msm_kms.h | 3 +--
4 files changed, 58 insertions(+), 17 deletions(-)
diff --git a/drivers/gpu/drm/msm/msm_atomic.c b/drivers/gpu/drm/msm/msm_atomic.c
index fab09e7c6efc..27c9ae563f2f 100644
--- a/drivers/gpu/drm/msm/msm_atomic.c
+++ b/drivers/gpu/drm/msm/msm_atomic.c
@@ -116,20 +116,10 @@ static void msm_atomic_async_commit(struct msm_kms *kms, int crtc_idx)
trace_msm_atomic_async_commit_finish(crtc_mask);
}
-static enum hrtimer_restart msm_atomic_pending_timer(struct hrtimer *t)
-{
- struct msm_pending_timer *timer = container_of(t,
- struct msm_pending_timer, timer);
-
- kthread_queue_work(timer->worker, &timer->work);
-
- return HRTIMER_NORESTART;
-}
-
static void msm_atomic_pending_work(struct kthread_work *work)
{
struct msm_pending_timer *timer = container_of(work,
- struct msm_pending_timer, work);
+ struct msm_pending_timer, work.work);
msm_atomic_async_commit(timer->kms, timer->crtc_idx);
}
@@ -139,8 +129,6 @@ int msm_atomic_init_pending_timer(struct msm_pending_timer *timer,
{
timer->kms = kms;
timer->crtc_idx = crtc_idx;
- hrtimer_init(&timer->timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
- timer->timer.function = msm_atomic_pending_timer;
timer->worker = kthread_create_worker(0, "atomic-worker-%d", crtc_idx);
if (IS_ERR(timer->worker)) {
@@ -149,7 +137,10 @@ int msm_atomic_init_pending_timer(struct msm_pending_timer *timer,
return ret;
}
sched_set_fifo(timer->worker->task);
- kthread_init_work(&timer->work, msm_atomic_pending_work);
+
+ msm_hrtimer_work_init(&timer->work, timer->worker,
+ msm_atomic_pending_work,
+ CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
return 0;
}
@@ -258,7 +249,7 @@ void msm_atomic_commit_tail(struct drm_atomic_state *state)
vsync_time = kms->funcs->vsync_time(kms, async_crtc);
wakeup_time = ktime_sub(vsync_time, ms_to_ktime(1));
- hrtimer_start(&timer->timer, wakeup_time,
+ msm_hrtimer_queue_work(&timer->work, wakeup_time,
HRTIMER_MODE_ABS);
}
diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c
index 938765ad7109..624078b3adf2 100644
--- a/drivers/gpu/drm/msm/msm_drv.c
+++ b/drivers/gpu/drm/msm/msm_drv.c
@@ -200,6 +200,35 @@ void msm_rmw(void __iomem *addr, u32 mask, u32 or)
msm_writel(val | or, addr);
}
+static enum hrtimer_restart msm_hrtimer_worktimer(struct hrtimer *t)
+{
+ struct msm_hrtimer_work *work = container_of(t,
+ struct msm_hrtimer_work, timer);
+
+ kthread_queue_work(work->worker, &work->work);
+
+ return HRTIMER_NORESTART;
+}
+
+void msm_hrtimer_queue_work(struct msm_hrtimer_work *work,
+ ktime_t wakeup_time,
+ enum hrtimer_mode mode)
+{
+ hrtimer_start(&work->timer, wakeup_time, mode);
+}
+
+void msm_hrtimer_work_init(struct msm_hrtimer_work *work,
+ struct kthread_worker *worker,
+ kthread_work_func_t fn,
+ clockid_t clock_id,
+ enum hrtimer_mode mode)
+{
+ hrtimer_init(&work->timer, clock_id, mode);
+ work->timer.function = msm_hrtimer_worktimer;
+ work->worker = worker;
+ kthread_init_work(&work->work, fn);
+}
+
static irqreturn_t msm_irq(int irq, void *arg)
{
struct drm_device *dev = arg;
diff --git a/drivers/gpu/drm/msm/msm_drv.h b/drivers/gpu/drm/msm/msm_drv.h
index 8b005d1ac899..de062450add4 100644
--- a/drivers/gpu/drm/msm/msm_drv.h
+++ b/drivers/gpu/drm/msm/msm_drv.h
@@ -488,6 +488,28 @@ void msm_writel(u32 data, void __iomem *addr);
u32 msm_readl(const void __iomem *addr);
void msm_rmw(void __iomem *addr, u32 mask, u32 or);
+/**
+ * struct msm_hrtimer_work - a helper to combine an hrtimer with kthread_work
+ *
+ * @timer: hrtimer to control when the kthread work is triggered
+ * @work: the kthread work
+ * @worker: the kthread worker the work will be scheduled on
+ */
+struct msm_hrtimer_work {
+ struct hrtimer timer;
+ struct kthread_work work;
+ struct kthread_worker *worker;
+};
+
+void msm_hrtimer_queue_work(struct msm_hrtimer_work *work,
+ ktime_t wakeup_time,
+ enum hrtimer_mode mode);
+void msm_hrtimer_work_init(struct msm_hrtimer_work *work,
+ struct kthread_worker *worker,
+ kthread_work_func_t fn,
+ clockid_t clock_id,
+ enum hrtimer_mode mode);
+
struct msm_gpu_submitqueue;
int msm_submitqueue_init(struct drm_device *drm, struct msm_file_private *ctx);
struct msm_gpu_submitqueue *msm_submitqueue_get(struct msm_file_private *ctx,
diff --git a/drivers/gpu/drm/msm/msm_kms.h b/drivers/gpu/drm/msm/msm_kms.h
index de2bc3467bb5..6a42b819abc4 100644
--- a/drivers/gpu/drm/msm/msm_kms.h
+++ b/drivers/gpu/drm/msm/msm_kms.h
@@ -136,8 +136,7 @@ struct msm_kms;
* shortly before vblank to flush pending async updates.
*/
struct msm_pending_timer {
- struct hrtimer timer;
- struct kthread_work work;
+ struct msm_hrtimer_work work;
struct kthread_worker *worker;
struct msm_kms *kms;
unsigned crtc_idx;
--
2.31.1
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